Explanation

Since 25% were senior citizens, 75% were younger. The ratio of senior citizens to younger fans was 25%:75%. To reduce the ratio, divide both numbers by 25%.

25% ÷ 25% = 1 and 75% ÷ 25% = 3.

So the ratio is 1:3.

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Related questions

A beverage manufacturer would like to test the reliability of two processes for manufacturing orange juice and apple cider, respectively. A review of the orange juice manufacturing process found that 10% of the bottles are underfilled. A review of the apple cider manufacturing process found that 15% of the bottles are underfilled.

Orange Juice | Apple Cider | |

Probability of under-fill | 0.10 | 0.15 |

If two cans are selected at random (one from each process), what is the probability of selecting one under filled orange juice bottle and one under filled apple cider bottle?